DRIVING UNIT OF LIQUID CRYSTAL DISPLAY DEVICE FOR SETTING DETAILED VOLTAGE

A driving unit of a liquid crystal display(LCD) device is provided to finely adjust a common voltage by selecting the common voltage within a narrower voltage range, which is set by calculating one voltage. A liquid crystal display device includes plural pixels, which are arranged in a matrix form,...

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Bibliographische Detailangaben
Hauptverfasser:	BAE, JUNG YEOL, LEE, KYOUNG HUN
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY EDUCATION FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS SEALS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	A driving unit of a liquid crystal display(LCD) device is provided to finely adjust a common voltage by selecting the common voltage within a narrower voltage range, which is set by calculating one voltage. A liquid crystal display device includes plural pixels, which are arranged in a matrix form, and pixel and common electrodes for driving liquid crystal corresponding to the pixels. A driving unit for the LCD device includes a reference resistor, a first voltage setting unit(210), a second voltage setting unit(220), and a voltage selector(230). The reference resistor generates a reference voltage(Vref) from a source voltage, which is applied from the outside. The first voltage setting unit calculates a first voltage from the reference voltage and outputs the first voltage. The second voltage setting unit calculates a second voltage from the reference voltage and outputs the second voltage. The voltage selector selects a third voltage between the first and second voltages according to setting data from the outside and applies the third voltage to the common electrode.